Achieving high permeability and enhanced selectivity for Angstrom-scale separations using artificial water channel membranes
SCIE
SCOPUS
- Title
- Achieving high permeability and enhanced selectivity for Angstrom-scale separations using artificial water channel membranes
- Authors
- Shen, Yue-xiao; Song, Woochul; Barden, D. Ryan; Ren, Tingwei; Lang, Chao; Feroz, Hasin; Henderson, Codey B.; Saboe, Patrick O.; Tsai, Daniel; Yan, Hengjing; Butler, Peter J.; Bazan, Guillermo C.; Phillip, William A.; Hickey, Robert J.; Cremer, Paul S.; Vashisth, Harish; Kumar, Manish
- Date Issued
- 2018-06
- Publisher
- Nature Publishing Group
- Abstract
- Synthetic polymer membranes, critical to diverse energy-efficient separations, are subject to permeability-selectivity trade-offs that decrease their overall efficacy. These trade-offs are due to structural variations (e.g., broad pore size distributions) in both nonporous membranes used for Angstrom-scale separations and porous membranes used for nano to micron-scale separations. Biological membranes utilize well-defined Angstrom-scale pores to provide exceptional transport properties and can be used as inspiration to overcome this trade-off. Here, we present a comprehensive demonstration of such a bioinspired approach based on pillar[5]arene artificial water channels, resulting in artificial water channel-based block copolymer membranes. These membranes have a sharp selectivity profile with a molecular weight cutoff of ~ 500 Da, a size range challenging to achieve with current membranes, while achieving a large improvement in permeability (~65 L m-2 h-1 bar-1 compared with 4-7 L m-2 h-1 bar-1) over similarly rated commercial membranes. © 2018 The Author(s).
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/116241
- DOI
- 10.1038/s41467-018-04604-y
- ISSN
- 2041-1723
- Article Type
- Article
- Citation
- Nature Communications, vol. 9, no. 1, 2018-06
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- There are no files associated with this item.
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